The quantities of charges and CPD values are found to increase wi

The quantities of charges and CPD values are found to increase with the laser intensity and vary with the type of NRs. Though the exact mechanism for explaining the photogenerated effects of single Si NRs is not variable at present, it is clear that photoexcitation can lead to obvious charges trapped in Si NRs and hence reduce the work function of NRs. Therefore, EFM can provide an effective way to gain direct information on the trapped charges and surface potential of single nanostructures by combining with laser irradiation, which should be important for both basic understanding and potential applications of nanostructures in optoelectronics and photovoltaics. Acknowledgements This work was supported by

selleck products the Major State Defactinib clinical trial Basic Research Project of China (No. 2011CB925601), National Natural Science Foundation of China (No. 11274072), and Natural Science Foundation of Shanghai (No.12ZR1401300). References 1. Zhang Z, Zou R, Yu L, Hu J: Recent research on one-dimensional silicon-based semiconductor nanomaterials: synthesis. Crit Rev Solid

State 2011, 36:148–173.CrossRef 2. Barth S, Hernandez-Ramirez F, Holmes JD, Romano-Rodriguez A: Synthesis and applications of one-dimensional semiconductors. Prog Mater Sci 2010, 55:563–627.CrossRef 3. Kenry , Lim CT: Synthesis, JQEZ5 clinical trial optical properties, and chemical-biological sensing applications of one-dimensional inorganic semiconductor nanowires. Prog Mater Sci 2013, 58:705–748.CrossRef 4. Hu L, Chen G: Analysis of optical absorption in silicon nanowire arrays for photovoltaic applications. Nano Lett 2007, 7:3249–3252.CrossRef 5. Yoo J, Dayeh SA, Tang W, Picraux ST: Epitaxial growth of radial Si p-i-n junctions for photovoltaic applications. Appl Phys Lett 2013, 102:093113.CrossRef 6. Perraud S, Poncet S, Noël S, Levis M, Faucherand P, Rouvière E, Thony P, Jaussaud C, Delsol R: Full process for integrating silicon nanowire arrays into solar cells. Sol

Energ Mater Sol C 2009, 93:1568–71.CrossRef Mannose-binding protein-associated serine protease 7. Tsakalakos L, Balch J, Fronheiser J, Korevaar BA, Sulima O, Rand J: Silicon nanowire solar cells. Appl Phys Lett 2007, 91:233117.CrossRef 8. Tang H, Zhu L-G, Zhao L, Zhang X, Shan J, Lee S-T: Carrier dynamics in Si nanowires fabricated by metal-assisted chemical etching. Acs Nano 2012, 6:7814–7819.CrossRef 9. Kim J, Rhu H, Lee W: A continuous process for Si nanowires with prescribed lengths. J Mater Chem 2011, 21:15889.CrossRef 10. Kiraly B, Yang S, Huang TJ: Multifunctional porous silicon nanopillar arrays: antireflection, superhydrophobicity, photoluminescence, and surface-enhanced Raman scattering. Nanotechnology 2013, 24:245704.CrossRef 11. Jespersen TS, Nygard J: Charge trapping in carbon nanotube loops demonstrated by electrostatic force microscopy. Nano Lett 2005, 5:1838–1841.CrossRef 12. Heim T, Lmimouni K, Vuillaume D: Ambipolar charge injection and transport in a single pentacene monolayer island.

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